US Teleco. Operating Companies    
  Companies  
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  A3.com
ACC Corp
Adhoc International
Alachua Tel-Com
Aliant Communications
AllCom
ALLTEL
AMCALL
American Communication Services Inc (ACSI)
American International Telephone
Americom Long Distance
American Paging
Americatel
Ameritech
ARDIS
ATCALL
AT&T
ATU Telecommunications
AVIRNEX
AzNet
Belgacom North America
Bell Atlantic
BellSouth
BellSouth International
Blue Earth Valley Communications - Blue Valley, Minnesota
Brookings Telephone - South Dakota
BTI
CallAmerica
CapRock Communications
CFW Communications - Virginia
CGX Telcom
Churchill County Telephone Systems - Churchill County, Nevada
Cincinnati Bell
Citizens Telephone Cooperative
Coastal Utilities - coastal Georgia
CommLink Communications
Continect
D & E Communications
DeltaCom - South East
Dunkirk and Fredonia Telephone Company - New York State
Excel Communications
France Telecom North America
Frontier Corporation
Globalstar GTE
ITC Long Distance
LCI International
MCI
McLeod USA
Minnesota Equal Access Network Services (MEANS)
MFS
New World Telecommunications
NTT USA
Nynex
Pacific Bell
Pacific Telesis
PacWest Telecomm
PTT Telecom Netherlands US
Qwest Communications
RSL Communications Ltd
SBC Communications Inc
SNET
SNET - Connecticut
Sprint Communications
Sprint in Florida
TCI Telephone and Data Systems, Inc. (TDS)
Teleport Communications Group
US West
Unity Telecom
Ursus Telecom Corporation
WorldCom

 


International Telecommunications Union - Standards Recommendations
International Telecommunications Union - Standards Recommendations.
 
   
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